AtomicLongArray (Java SE 9 & JDK 9 ) (original) (raw)

Constructor Summary

Constructors

Constructor	Description
AtomicLongArray(int length)	Creates a new AtomicLongArray of the given length, with all elements initially zero.
AtomicLongArray(long[] array)	Creates a new AtomicLongArray with the same length as, and all elements copied from, the given array.

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods

Modifier and Type	Method	Description
long	accumulateAndGet(int i, long x,LongBinaryOperator accumulatorFunction)	Atomically updates (with memory effects as specified by VarHandle.compareAndSet(java.lang.Object...)) the element at index i with the results of applying the given function to the current and given values, returning the updated value.
long	addAndGet(int i, long delta)	Atomically adds the given value to the element at index i, with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...).
long	compareAndExchange(int i, long expectedValue, long newValue)	Atomically sets the element at index i to newValue if the element's current value, referred to as the witness value, == expectedValue, with memory effects as specified byVarHandle.compareAndExchange(java.lang.Object...).
long	compareAndExchangeAcquire(int i, long expectedValue, long newValue)	Atomically sets the element at index i to newValue if the element's current value, referred to as the witness value, == expectedValue, with memory effects as specified byVarHandle.compareAndExchangeAcquire(java.lang.Object...).
long	compareAndExchangeRelease(int i, long expectedValue, long newValue)	Atomically sets the element at index i to newValue if the element's current value, referred to as the witness value, == expectedValue, with memory effects as specified byVarHandle.compareAndExchangeRelease(java.lang.Object...).
boolean	compareAndSet(int i, long expectedValue, long newValue)	Atomically sets the element at index i to newValue if the element's current value == expectedValue, with memory effects as specified by VarHandle.compareAndSet(java.lang.Object...).
long	decrementAndGet(int i)	Atomically decrements the value of the element at index i, with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...).
long	get(int i)	Returns the current value of the element at index i, with memory effects as specified by VarHandle.getVolatile(java.lang.Object...).
long	getAcquire(int i)	Returns the current value of the element at index i, with memory effects as specified by VarHandle.getAcquire(java.lang.Object...).
long	getAndAccumulate(int i, long x,LongBinaryOperator accumulatorFunction)	Atomically updates (with memory effects as specified by VarHandle.compareAndSet(java.lang.Object...)) the element at index i with the results of applying the given function to the current and given values, returning the previous value.
long	getAndAdd(int i, long delta)	Atomically adds the given value to the element at index i, with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...).
long	getAndDecrement(int i)	Atomically decrements the value of the element at index i, with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...).
long	getAndIncrement(int i)	Atomically increments the value of the element at index i, with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...).
long	getAndSet(int i, long newValue)	Atomically sets the element at index i to newValue and returns the old value, with memory effects as specified by VarHandle.getAndSet(java.lang.Object...).
long	getAndUpdate(int i,LongUnaryOperator updateFunction)	Atomically updates (with memory effects as specified by VarHandle.compareAndSet(java.lang.Object...)) the element at index i with the results of applying the given function, returning the previous value.
long	getOpaque(int i)	Returns the current value of the element at index i, with memory effects as specified by VarHandle.getOpaque(java.lang.Object...).
long	getPlain(int i)	Returns the current value of the element at index i, with memory semantics of reading as if the variable was declared non-volatile.
long	incrementAndGet(int i)	Atomically increments the value of the element at index i, with memory effects as specified by VarHandle.getAndAdd(java.lang.Object...).
void	lazySet(int i, long newValue)	Sets the element at index i to newValue, with memory effects as specified by VarHandle.setRelease(java.lang.Object...).
int	length()	Returns the length of the array.
void	set(int i, long newValue)	Sets the element at index i to newValue, with memory effects as specified by VarHandle.setVolatile(java.lang.Object...).
void	setOpaque(int i, long newValue)	Sets the element at index i to newValue, with memory effects as specified by VarHandle.setOpaque(java.lang.Object...).
void	setPlain(int i, long newValue)	Sets the element at index i to newValue, with memory semantics of setting as if the variable was declared non-volatile and non-final.
void	setRelease(int i, long newValue)	Sets the element at index i to newValue, with memory effects as specified by VarHandle.setRelease(java.lang.Object...).
String	toString()	Returns the String representation of the current values of array.
long	updateAndGet(int i,LongUnaryOperator updateFunction)	Atomically updates (with memory effects as specified by VarHandle.compareAndSet(java.lang.Object...)) the element at index i with the results of applying the given function, returning the updated value.
boolean	weakCompareAndSet(int i, long expectedValue, long newValue)	Deprecated.
boolean	weakCompareAndSetAcquire(int i, long expectedValue, long newValue)	Possibly atomically sets the element at index i tonewValue if the element's current value == expectedValue, with memory effects as specified byVarHandle.weakCompareAndSetAcquire(java.lang.Object...).
boolean	weakCompareAndSetPlain(int i, long expectedValue, long newValue)	Possibly atomically sets the element at index i tonewValue if the element's current value == expectedValue, with memory effects as specified by VarHandle.weakCompareAndSetPlain(java.lang.Object...).
boolean	weakCompareAndSetRelease(int i, long expectedValue, long newValue)	Possibly atomically sets the element at index i tonewValue if the element's current value == expectedValue, with memory effects as specified byVarHandle.weakCompareAndSetRelease(java.lang.Object...).
boolean	weakCompareAndSetVolatile(int i, long expectedValue, long newValue)	Possibly atomically sets the element at index i tonewValue if the element's current value == expectedValue, with memory effects as specified byVarHandle.weakCompareAndSet(java.lang.Object...).

   * ### Methods inherited from class java.lang.[Object](../../../../java/lang/Object.html "class in java.lang")  
   `[clone](../../../../java/lang/Object.html#clone--), [equals](../../../../java/lang/Object.html#equals-java.lang.Object-), [finalize](../../../../java/lang/Object.html#finalize--), [getClass](../../../../java/lang/Object.html#getClass--), [hashCode](../../../../java/lang/Object.html#hashCode--), [notify](../../../../java/lang/Object.html#notify--), [notifyAll](../../../../java/lang/Object.html#notifyAll--), [wait](../../../../java/lang/Object.html#wait--), [wait](../../../../java/lang/Object.html#wait-long-), [wait](../../../../java/lang/Object.html#wait-long-int-)`

Constructor Detail

 * #### AtomicLongArray  
 public AtomicLongArray(int length)  
 Creates a new AtomicLongArray of the given length, with all elements initially zero.  
 Parameters:  
 `length` \- the length of the array  
 * #### AtomicLongArray  
 public AtomicLongArray(long[] array)  
 Creates a new AtomicLongArray with the same length as, and all elements copied from, the given array.  
 Parameters:  
 `array` \- the array to copy elements from  
 Throws:  
 `[NullPointerException](../../../../java/lang/NullPointerException.html "class in java.lang")` \- if array is null

Method Detail

* #### length  
public final int length()  
Returns the length of the array.  
Returns:  
the length of the array  
* #### get  
public final long get(int i)  
Parameters:  
`i` \- the index  
Returns:  
the current value  
* #### set  
public final void set(int i,  
                      long newValue)  
Parameters:  
`i` \- the index  
`newValue` \- the new value  
* #### lazySet  
public final void lazySet(int i,  
                          long newValue)  
Parameters:  
`i` \- the index  
`newValue` \- the new value  
Since:  
1.6  
* #### getAndSet  
public final long getAndSet(int i,  
                            long newValue)  
Parameters:  
`i` \- the index  
`newValue` \- the new value  
Returns:  
the previous value  
* #### compareAndSet  
public final boolean compareAndSet(int i,  
                                   long expectedValue,  
                                   long newValue)  
Atomically sets the element at index `i` to `newValue` if the element's current value `== expectedValue`, with memory effects as specified by [VarHandle.compareAndSet(java.lang.Object...)](../../../../java/lang/invoke/VarHandle.html#compareAndSet-java.lang.Object...-).  
Parameters:  
`i` \- the index  
`expectedValue` \- the expected value  
`newValue` \- the new value  
Returns:  
`true` if successful. False return indicates that the actual value was not equal to the expected value.  
* #### weakCompareAndSet  
[@Deprecated](../../../../java/lang/Deprecated.html "annotation in java.lang")([since](../../../../java/lang/Deprecated.html#since--)="9")  
public final boolean weakCompareAndSet(int i,  
                                       long expectedValue,  
                                       long newValue)  
Parameters:  
`i` \- the index  
`expectedValue` \- the expected value  
`newValue` \- the new value  
Returns:  
`true` if successful  
See Also:  
[weakCompareAndSetPlain(int, long, long)](../../../../java/util/concurrent/atomic/AtomicLongArray.html#weakCompareAndSetPlain-int-long-long-)  
* #### weakCompareAndSetPlain  
public final boolean weakCompareAndSetPlain(int i,  
                                            long expectedValue,  
                                            long newValue)  
Parameters:  
`i` \- the index  
`expectedValue` \- the expected value  
`newValue` \- the new value  
Returns:  
`true` if successful  
Since:  
9  
* #### getAndIncrement  
public final long getAndIncrement(int i)  
Parameters:  
`i` \- the index  
Returns:  
the previous value  
* #### getAndDecrement  
public final long getAndDecrement(int i)  
Parameters:  
`i` \- the index  
Returns:  
the previous value  
* #### getAndAdd  
public final long getAndAdd(int i,  
                            long delta)  
Parameters:  
`i` \- the index  
`delta` \- the value to add  
Returns:  
the previous value  
* #### incrementAndGet  
public final long incrementAndGet(int i)  
Parameters:  
`i` \- the index  
Returns:  
the updated value  
* #### decrementAndGet  
public final long decrementAndGet(int i)  
Parameters:  
`i` \- the index  
Returns:  
the updated value  
* #### addAndGet  
public long addAndGet(int i,  
                      long delta)  
Parameters:  
`i` \- the index  
`delta` \- the value to add  
Returns:  
the updated value  
* #### getAndUpdate  
public final long getAndUpdate(int i,  
                               [LongUnaryOperator](../../../../java/util/function/LongUnaryOperator.html "interface in java.util.function") updateFunction)  
Atomically updates (with memory effects as specified by [VarHandle.compareAndSet(java.lang.Object...)](../../../../java/lang/invoke/VarHandle.html#compareAndSet-java.lang.Object...-)) the element at index `i` with the results of applying the given function, returning the previous value. The function should be side-effect-free, since it may be re-applied when attempted updates fail due to contention among threads.  
Parameters:  
`i` \- the index  
`updateFunction` \- a side-effect-free function  
Returns:  
the previous value  
Since:  
1.8  
* #### updateAndGet  
public final long updateAndGet(int i,  
                               [LongUnaryOperator](../../../../java/util/function/LongUnaryOperator.html "interface in java.util.function") updateFunction)  
Atomically updates (with memory effects as specified by [VarHandle.compareAndSet(java.lang.Object...)](../../../../java/lang/invoke/VarHandle.html#compareAndSet-java.lang.Object...-)) the element at index `i` with the results of applying the given function, returning the updated value. The function should be side-effect-free, since it may be re-applied when attempted updates fail due to contention among threads.  
Parameters:  
`i` \- the index  
`updateFunction` \- a side-effect-free function  
Returns:  
the updated value  
Since:  
1.8  
* #### getAndAccumulate  
public final long getAndAccumulate(int i,  
                                   long x,  
                                   [LongBinaryOperator](../../../../java/util/function/LongBinaryOperator.html "interface in java.util.function") accumulatorFunction)  
Atomically updates (with memory effects as specified by [VarHandle.compareAndSet(java.lang.Object...)](../../../../java/lang/invoke/VarHandle.html#compareAndSet-java.lang.Object...-)) the element at index `i` with the results of applying the given function to the current and given values, returning the previous value. The function should be side-effect-free, since it may be re-applied when attempted updates fail due to contention among threads. The function is applied with the current value of the element at index `i` as its first argument, and the given update as the second argument.  
Parameters:  
`i` \- the index  
`x` \- the update value  
`accumulatorFunction` \- a side-effect-free function of two arguments  
Returns:  
the previous value  
Since:  
1.8  
* #### accumulateAndGet  
public final long accumulateAndGet(int i,  
                                   long x,  
                                   [LongBinaryOperator](../../../../java/util/function/LongBinaryOperator.html "interface in java.util.function") accumulatorFunction)  
Atomically updates (with memory effects as specified by [VarHandle.compareAndSet(java.lang.Object...)](../../../../java/lang/invoke/VarHandle.html#compareAndSet-java.lang.Object...-)) the element at index `i` with the results of applying the given function to the current and given values, returning the updated value. The function should be side-effect-free, since it may be re-applied when attempted updates fail due to contention among threads. The function is applied with the current value of the element at index `i` as its first argument, and the given update as the second argument.  
Parameters:  
`i` \- the index  
`x` \- the update value  
`accumulatorFunction` \- a side-effect-free function of two arguments  
Returns:  
the updated value  
Since:  
1.8  
* #### toString  
public [String](../../../../java/lang/String.html "class in java.lang") toString()  
Returns the String representation of the current values of array.  
Overrides:  
`[toString](../../../../java/lang/Object.html#toString--)` in class `[Object](../../../../java/lang/Object.html "class in java.lang")`  
Returns:  
the String representation of the current values of array  
* #### getPlain  
public final long getPlain(int i)  
Returns the current value of the element at index `i`, with memory semantics of reading as if the variable was declared non-`volatile`.  
Parameters:  
`i` \- the index  
Returns:  
the value  
Since:  
9  
* #### setPlain  
public final void setPlain(int i,  
                           long newValue)  
Sets the element at index `i` to `newValue`, with memory semantics of setting as if the variable was declared non-`volatile` and non-`final`.  
Parameters:  
`i` \- the index  
`newValue` \- the new value  
Since:  
9  
* #### getOpaque  
public final long getOpaque(int i)  
Parameters:  
`i` \- the index  
Returns:  
the value  
Since:  
9  
* #### setOpaque  
public final void setOpaque(int i,  
                            long newValue)  
Parameters:  
`i` \- the index  
`newValue` \- the new value  
Since:  
9  
* #### getAcquire  
public final long getAcquire(int i)  
Parameters:  
`i` \- the index  
Returns:  
the value  
Since:  
9  
* #### setRelease  
public final void setRelease(int i,  
                             long newValue)  
Parameters:  
`i` \- the index  
`newValue` \- the new value  
Since:  
9  
* #### compareAndExchange  
public final long compareAndExchange(int i,  
                                     long expectedValue,  
                                     long newValue)  
Atomically sets the element at index `i` to `newValue` if the element's current value, referred to as the _witness value_, `== expectedValue`, with memory effects as specified by[VarHandle.compareAndExchange(java.lang.Object...)](../../../../java/lang/invoke/VarHandle.html#compareAndExchange-java.lang.Object...-).  
Parameters:  
`i` \- the index  
`expectedValue` \- the expected value  
`newValue` \- the new value  
Returns:  
the witness value, which will be the same as the expected value if successful  
Since:  
9  
* #### compareAndExchangeAcquire  
public final long compareAndExchangeAcquire(int i,  
                                            long expectedValue,  
                                            long newValue)  
Atomically sets the element at index `i` to `newValue` if the element's current value, referred to as the _witness value_, `== expectedValue`, with memory effects as specified by[VarHandle.compareAndExchangeAcquire(java.lang.Object...)](../../../../java/lang/invoke/VarHandle.html#compareAndExchangeAcquire-java.lang.Object...-).  
Parameters:  
`i` \- the index  
`expectedValue` \- the expected value  
`newValue` \- the new value  
Returns:  
the witness value, which will be the same as the expected value if successful  
Since:  
9  
* #### compareAndExchangeRelease  
public final long compareAndExchangeRelease(int i,  
                                            long expectedValue,  
                                            long newValue)  
Atomically sets the element at index `i` to `newValue` if the element's current value, referred to as the _witness value_, `== expectedValue`, with memory effects as specified by[VarHandle.compareAndExchangeRelease(java.lang.Object...)](../../../../java/lang/invoke/VarHandle.html#compareAndExchangeRelease-java.lang.Object...-).  
Parameters:  
`i` \- the index  
`expectedValue` \- the expected value  
`newValue` \- the new value  
Returns:  
the witness value, which will be the same as the expected value if successful  
Since:  
9  
* #### weakCompareAndSetVolatile  
public final boolean weakCompareAndSetVolatile(int i,  
                                               long expectedValue,  
                                               long newValue)  
Possibly atomically sets the element at index `i` to`newValue` if the element's current value `== expectedValue`, with memory effects as specified by[VarHandle.weakCompareAndSet(java.lang.Object...)](../../../../java/lang/invoke/VarHandle.html#weakCompareAndSet-java.lang.Object...-).  
Parameters:  
`i` \- the index  
`expectedValue` \- the expected value  
`newValue` \- the new value  
Returns:  
`true` if successful  
Since:  
9  
* #### weakCompareAndSetAcquire  
public final boolean weakCompareAndSetAcquire(int i,  
                                              long expectedValue,  
                                              long newValue)  
Parameters:  
`i` \- the index  
`expectedValue` \- the expected value  
`newValue` \- the new value  
Returns:  
`true` if successful  
Since:  
9  
* #### weakCompareAndSetRelease  
public final boolean weakCompareAndSetRelease(int i,  
                                              long expectedValue,  
                                              long newValue)  
Parameters:  
`i` \- the index  
`expectedValue` \- the expected value  
`newValue` \- the new value  
Returns:  
`true` if successful  
Since:  
9

AtomicLongArray (Java SE 9 & JDK 9 ) (original) (raw)

Constructor Summary

Method Summary

Constructor Detail

Method Detail